Hi guys I have a similar problem and maybe you can help me.
I have the Promise TX2300 on an Intel 915GAG mobo.
My problems is that at startup EVERY linux with kernel 2.6 stocks while trying to find the HD.
If I disconnect the raid controller and install the system all ok, but when I put again the card the array is not detected. If I use an old linux with Kernel 2.4 (FC3, RH9) everything is ok but it's too old.
Any idea? Maybe is my mainboard? I've try also a Asus P5b, same thing.